axial mode 中文意思是什麼

In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。

On the east terrace - fault slope of the depression, the sedimentary mode of fan - shaped delta - slump turbid fan - deep lake facies are developed. on the long axial direction of fula depression, the southeastern groove was filled with a large scale delta which was the main sources, the other little delta limited by the 3 syndepositional fault was distributed down the slope edge of the northern sub - depression. this stage developed a favorable oil sources, reservoir and regional seal which formed the good matching relations of generation, reservoir and seal in the time - space zone

Abugarbra組的sc和sd層序發育在邊界斷層和同沉積斷層活動劇烈、湖盆擴張期，凹陷中心發育半深湖-深湖相沉積，在凹陷陡坡發育近岸水下扇，斷階緩坡帶發育扇三角洲?滑塌濁積扇?深湖相組合，長軸凹槽和北部次凹的北部緩坡帶發育三角洲體系，此層位是有利生油層和巖性圈閉發育層段。

The shear mechanism, failure mode, deformation capacity, bearing capacity and the reliability of the anchored angle steels of the wrapped steel concrete cast - in - site frame typical story exterior joints under the middle and high axial compression ratio ( n = 0. 3, 0. 5, 0. 6 ), the working performance, failure mode, and the shear capacity of top story joints under the crack moment, the hysteresis characteristic and the dissipation energy capacity of the test joints are all analysed based on the 1 / 4 model pseudo - static tests of five specimens of wrapped steel concrete cast - in - site frame exterior joints, which varied in axial compression ratio, distribution of the beam angle steels and the stirrup ratio

基於上述分析，本次試驗通過五個外包鋼混凝土邊節點1 4比例模型的偽靜力試驗，以柱的軸壓比、梁角鋼布置形式、配箍率等為主要參數，分析外包鋼混凝土現澆框架一般層邊節點在中高軸壓比（ n = 0 . 3 、 0 . 5 、 0 . 6 ）條件下，節點的抗剪機理、破壞模式、變形能力、承載能力和角鋼錨固的可靠性；分析了頂層邊節點在張開彎矩作用下的工作性能、破壞模式和抗剪承載力；分析了試驗節點的滯回性能和耗能能力。

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

Through systemic analyzing on spiral helical gear transmission with different basic parameters, the essay found out rules of how can such basic parameters influence spiral helical gear engagement characteristics. so it brings forward the auxiliary assembling mode of adopting one straight gear and one helical gear on condition of little axial angle as well as treasures to ameliorate ill engagement performance on condition of large axial angle, another two jobs of the essay are to clarify the wrong concept that spiral helical gear can only transmit movement but not impetus and to provide a brief and practical method of analyzing contact for gear pairs whose surface equations can be written out directly

通過對不同基本參數的螺旋齒輪傳動進行系統研究，找出了螺旋齒輪基本參數對其嚙合特性的影響規律，提出小軸交角條件下可採用一直齒輪、一斜齒輪的齒輪副組合方式，給出了大軸交角條件下嚙合性能不良的改進措施。澄清了螺旋齒輪只能傳遞運動不能傳遞動力的誤區，為能夠直接寫出齒面方程的齒輪副進行齒面接觸分析提供了一種簡便、實用的新方法。

One end of belt - driven roller is fixed with machine body. the other end links with bolt - mode coupler at axial end of reducer. so that belt is easier replaced

皮帶驅動輥筒一端固定於機體上，一端與減速機軸端插銷式聯軸器相連，使皮帶更換更容易。

Constracting the axial stiffness of arbitrary supported rod from fundamental mode shape

由基模態構造任意支撐桿的多項式型軸向剛度

Based on the analytical result, the axial force is large and the moment is negligible, whether the failure mode of these columns is unstable failure - if unstable failure happens, the bearing capacity of these columns may be less than that of material failure, the safety of this project may not be guaranteed

根據本工程內力分析結果，柱軸力很大，彎矩極小，該細長柱是否會發生失穩破壞?如果發生失穩破壞，其承載能力將會低於按規范計算的材料破壞承載力，則工程的安全性將得不到保證。

For each stiffener element, the average stress - strain relationship under axial load as a beam - column in the flexural buckling mode is derived based on the approximate method, proposed by gordo and guedes scares

這種方法對傳統船型是有效的，但是它不能給出船體極強度的真實估算，而且當應用於非傳統船型時其計算結果不能令人滿意。

The mode competition is much improved. it may operated with a large electron beam radius, that means decreasing the space charge effects compared with a smaller radius beam with the same current, hence the rbwo may operated with a low axial guide magnetic field. besides, the rbwo with a sinusoidal corrugated coaxial structure is very easy to manufacture

波紋內導體rbwo具有一些突出優點:同軸結構中內導體的存在使系統的截止頻率顯著升高，使得系統尺寸可比普通波紋波導慢波系統大;具有很大的抑制模式競爭的能力和很高的功率容量;可以採用大半徑電子注，在工作電流不變的情況下空間電荷效應大幅度降低，因而可以工作在低磁場狀態;此種慢波結構內導體上的波紋易於加工。

C ompared the results of structural period, displacement and internal forces of mode 1 with mode 3, we can know that the hypo - frame can increase the lateral stiffness of the mega steel - frame structures, decrease lateral - deformation of the structures, especially decrease the maximum inter - storey displacement obviously, and get the internal forces and deformation of the whole structure more uniform. from the analysis results, it can be found that the maximum axial force gets less with hypo - frame than without it, and the maximum shear force and bending moment get more with hypo - frame than without it. thus it can be seen that the mainframe can be an independent structure system by itself, but the cooperation of main and hypo frame should be considered for conducting the entire analysis and design, otherwise the mega structure can be unsafe, in addition, from the comparing analysis, it can be found that the shear force and bending moment of inside - row columns are increased much more than those of outside - row ones in a mega column

通過3個算例方案1和方案3結構周期、位移和內力反應的比較分析可知，次框架可以進一步增加巨型鋼框架結構的抗側剛度，減少結構側向變形，特別是明顯減少了結構最大層間位移，使整個結構的內力與變形分佈更為均勻；次框架的加入使主框架柱最大軸力較無次框架情況減少，而主框架柱的最大剪力和彎矩較無次框架情況都有所增加，由此可知，雖然主框架本身可以成為獨立的結構體系，但在分析設計時，還應該考慮主、次框架協同工作，進行整體分析、整體設計，否則結構會偏於不安全。

Single mode optical fiber laser confocal scanning microscopy is a new technology in microstructure studying. the speciality of the system is limiting the out - of - focus light reflected from out - of - focus plane in object to restrict the blur of image. therefore, the plane resolution and axial resolution of the system could be improved to sub - micron grade

單模光纖激光共焦掃描顯微成像系統是研究微觀結構的一種新技術，其本質是抑制目標物體離焦面所反射的光線進入系統，從而抑制這些離焦光線造成像點彌散斑增大的影響，使系統的橫向與軸向解析度得到大幅度的提高，能實現亞微米級的層析。

Expansion joint was one of the most important parts of pipe system. it can close the vibration off in pipe system and absorb the displacement caused by stress, axial force, transverse force and temperature grads. based on fea parametric analysis, ansys was used to study the mode and harmonic response of expansion joint in this article

波紋管膨脹節是管系中的重要組成部件，它不僅能夠吸收由壓力、軸向力、橫向力、彎矩以及溫差等原因引起的位移，還可作為隔振元件用於管系的減振隔振。